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| {{#Wiki_filter:}} | | {{#Wiki_filter:From: Haskell, Russell To: thomas.loomis@exeloncorp.com Cc: Steinman, Rebecca L:(Exelon Nuclear) |
| | |
| | ==Subject:== |
| | (Dresden) Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting Date: Wednesday, May 19, 2021 8:26:48 AM Mr. Loomis: |
| | By application dated December 1, 2020 (ADAMS Accession No. ML20336A008), Exelon Generation Company, LLC (the licensee) submitted a request in accordance with Paragraph 50.55a(z)(1) of Title 10 of the Code of Federal Regulations (10 CFR) for a proposed alternative to certain requirements of 10 CFR 50.55a, Codes and standards. |
| | This was a fleet-based request which included the Dresden Nuclear Power Station, Units 2 and 3 (Dresden). The proposed alternative would allow the licensee to forgo preparation and completion of a repair and replacement plan and certain forms for pressure retaining bolting, that is not classified as Examination Categories B-G-1, B-G-2, or C-D, at this facility. |
| | By supplemental {{letter dated|date=April 20, 2021|text=letter dated April 20, 2021}} (ADAMS Accession No. ML20336A008), |
| | Exelon included responses to NRC staff questions regarding the initial application, as referenced above. As a result of the Exelon responses, the NRC staff identified issues that pertained to the Dresden proposed alternative on the aforementioned topic. The specific details of these issues were communicated to you via an NRC email message from the NRC Exelon Fleet Project Manager (B. Purnell) on April 26, 2021. In the message you were informed that the NRC staff has decided the supplemental letter included information for Dresden that is beyond the scope of the original application, which was accepted for review on December 14, 2020 (ADAMS Accession No. ML20350B558). You were informed the NRC staff will review the proposed alternative for Dresdens sixth 10-year ISI interval, separately, from the original application (which also included Dresdens 5th ISI interval). |
| | The submittal date for this new task was determined to be April 20, 2021, which coincides with the supplemental information furnished by Exelon. This review will be performed by the NRC staff with the project code of EPID L-2021-LLR-0030. (The NRC staff will continue the Dresden review for the 5th ISI interval under the original application and EPID project code L-2020-LLR-0155). Additionally, on Tuesday May 18, 2021, the NRC staff held a public Observation Meeting with the Exelon staff to assess and clarify several remaining questions associated with these efforts. Shortly following this meeting, Exelon submitted a letter to the NRC dated May 18, 2021, Supplemental Information Concerning Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting (ADAMS Accession No. ML21138A839), which included clarifying information for the staff to consider for the Dresden 6th ISI interval review. |
| | After a preliminary review of Exelons furnished information, the NRC staff has concluded that the request provides a sufficient level of technical information for the staff to commence with a detailed technical review and to make an independent assessment regarding the acceptability of the proposed request in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review process, as compared to a detailed technical review, there may be instances in which issues that impact the NRC staffs ability to complete its review are identified, despite completion of an adequate acceptance review. If additional information is needed, Exelon will be advised by separate correspondence. |
| | |
| | Based on the information provided in the request, the NRC staff has estimated that this review will take approximately 60 hours to complete by Exelons request date of January 22, 2022. These estimates are based on the NRC staffs initial review of the application and they could change due to several factors, including requests for additional information or an unanticipated addition of project scope identified during the review. Should the NRC staff identify any emergent complexities or challenges that would cause significant changes to these estimates, they will be promptly communicated during routine exchanges between the NRC Project Manager/Exelon staff. |
| | Russell S. Haskell II United States Nuclear Regulatory Commission (NRC) |
| | Licensing Project Manager - NRR/DORL/LPL 3 Dresden Nuclear Power Station, Units 2 and 3 |
| | + Russell.Haskell@nrc.gov; ( (301) 415-1129 (forwarded); Office: O-8C01; Mail-Stop O-8B1A}} |
Latest revision as of 13:27, 19 January 2022
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Category:Acceptance Review Letter
MONTHYEARML22179A2912022-10-27027 October 2022 Withdrawal of Proposed Alternative to Use ASME Code Case N-921 for the Sixth Inservice Inspection Intervals ML21139A1722021-05-19019 May 2021 Acceptance Review Memo Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Pressure Retaining Bolting Requirements ML21103A0082021-04-12012 April 2021 Acceptance Review (Exemption Request): Dresden Nuclear Power Station, Units 1, 2, and 3-Request for Exemption from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E ML21105A0002021-04-12012 April 2021 Acceptance Review (LAR)-Dresden Nuclear Power Station, Units 1, 2, and 3, Proposed Changes to the Dresden Nuclear Power Station Emergency Plan and Emergency Action Level Scheme for the Permanently De-fueled Condition ML21077A1772021-04-0808 April 2021 Withdrawal of Requested Exemption from Certain Requirement in 10 CFR 50.55a (Epids L-2021-LLE-0014, 0015, & 0016) ML21081A0222021-03-19019 March 2021 Acceptance Review for Dresden Order EA-12-051, Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation ML20343A1372020-12-0707 December 2020 Acceptance Review Dresden, Units 2 and 3, LAR for Proposed Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition ML20317A3112020-10-30030 October 2020 Acceptance of Requested Licensing Action: Certified Fuel Handler Training and Retraining Program ML20295A5572020-10-19019 October 2020 Status of Acceptance Review for Dresden Administrative LAR Dated 9/24/2020 ML19340A0952019-12-0505 December 2019 Rc Acceptance Review Dresden, Units 2 and 3 - Request for Relief (RR-I5R-04, R2) ML19324F4812019-11-20020 November 2019 Increase Allowable MSIV Leakage Rates ML16243A4892016-09-0101 September 2016 Acceptance of Requested Licensing Action Inservice Inspection Interval Proposed Alternative (I5R-08) ML15149A3852015-06-25025 June 2015 Acceptance of License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality ML1116804112011-06-17017 June 2011 Acceptance Review for Exelon Threshold Determination Request (TAC ME6269 - ME6287) ML1110504592011-04-27027 April 2011 Acceptance Review Amendment Concerning Reactor Coolant System Leakage Instrumentation ML1008800852010-07-21021 July 2010 Fleet - Acceptance Review Implementation of Emergency Action Level Schemes Developed from NEI 99-01m Rev. 5 ML0927900022009-10-0606 October 2009 RCS Leakage Detection Instrumentation - Acceptance Review Results ML0506604352005-03-17017 March 2005 Fuel Amendment Request Acceptance Review 2022-10-27
[Table view] Category:E-Mail
MONTHYEARML23339A0882023-12-0404 December 2023 NRR E-mail Capture - NRC Acceptance Review Re Dresden, Units 2 and 3 Request for Relief I5R-22 ML23328A0092023-11-22022 November 2023 Supplement - Dresden Security Rule Exemption Request ISFSI Docket No. Reference (EPID L-2023-LLE-0031) (Email) ML23304A0172023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Dresden 1, 2 & 3 - Exemption from Security Rule (L-2023-LLE-0031) ML23268A0022023-09-22022 September 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-264-A, Revision 0 ML23264A7992023-09-21021 September 2023 NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC Fleet Request License Amendment Request to Adopt TSTF-580, Revision 1 ML23263A9932023-09-20020 September 2023 NRR E-mail Capture - Dresden Nuclear Power Station, Units 2 and 3 - Acceptance of Licensing Action Submittal Re Amendment to Adopt TSTF-564 ML23163A2292023-06-12012 June 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-580, Revision 1 ML23052A0652023-02-21021 February 2023 NRR E-mail Capture - Dresden Units 2 and 3 - Request for Additional Information for Alternative Request RV-23H ML23026A0172023-01-23023 January 2023 NRR E-mail Capture - (External_Sender) IEMA Response Action - Request for Comments on the Proposed Issuance of Amendment to Technical Specification 4.3.1 for Dresden Nuclear Power Station, Units 2 and 3 ML23019A0132023-01-12012 January 2023 NRR E-mail Capture - Final RAI Dresden 2 and 3 - License Amendment Pertaining to GNF3 Fuel Transition ML22354A2622022-12-20020 December 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Request to Use Certain Provisions of the 2019 Edition of the ASME BPV Code, Section XI ML22325A1212022-11-21021 November 2022 NRR E-mail Capture - NRC Acceptance Review Re Dresden, Units 2 and 3 Request for Relief RV-02D (EPID L-2022-LLR-0075), RV-03 (EPID L-2022-LLR-0076), and RV-23H ML22301A0902022-10-28028 October 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-301, Revision 2 ML22290A0842022-10-13013 October 2022 NRR E-mail Capture - Dresden 2 and 3 - RAI License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies ML22258A1882022-09-15015 September 2022 NRR E-mail Capture - Acceptance Review: Dresden 2 and 3 License Amendment Request to Revise Technical Specification 3.1.4, ML22258A1872022-09-13013 September 2022 NRR E-mail Capture - NRC Acceptance Review Dresden, Units 2 and 3, Amendment Request - Transition to GNF3 Fuel ML22229A0752022-08-16016 August 2022 NRR E-mail Capture - NRC Acceptance Review Dresden, Units 2 and 3 Request for Relief 16R-09 ML22229A0762022-08-16016 August 2022 NRR E-mail Capture - NRC Acceptance Review Dresden, Units 2 and 3 Request for Relief 16R-10 ML22203A0442022-07-21021 July 2022 Request for Additional Information (RAI) ML22200A0782022-07-19019 July 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request to Use Honeywell Mururoa V4F1 R Supplied Air Suits ML22199A2412022-07-18018 July 2022 NRR E-mail Capture - Acceptance Review: Dresden Units 2 and 3 - License Amendment Request New Fuel Vault Storage and SFP Criticality Safety Analysis Methodology ML22199A2422022-07-13013 July 2022 NRR E-mail Capture - Draft RAI Dresden 2 and 3 Proposed Alternative Related to Sblc Nozzle Inspection for the Sixth Inservice Inspection Interval ML22103A2112022-04-12012 April 2022 NRR E-mail Capture - NRC Acceptance Review Dresden, Units 2 and 3 Request for Relief (16R-01) - EPID L-2022-LLR-0037 ML22103A2132022-04-12012 April 2022 NRR E-mail Capture - NRC Acceptance Review Dresden, Units 2 and 3 Request for Relief (16R-02) - EPID L-2022-LLR-0038 ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 ML22039A2042022-02-0808 February 2022 NRR E-mail Capture - Public Meeting Dresden/Quad Cities - Proposed Alternative to Use ASME Code Case N-921 ML22027A3592022-01-26026 January 2022 U1: CY2022 Inspection Plan, Docket No. 05000010, License No. DPR-2 ML22020A0642022-01-13013 January 2022 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21321A3802021-11-17017 November 2021 NRR E-mail Capture - NRC Acceptance Review of Dresden Nuclear Power Station, Units 2 and 3, Request for Exemption from 10 CFR 2.109(b) ML21301A0672021-10-28028 October 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-541 ML21256A1902021-09-10010 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21252A0482021-09-0707 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Alternative Request for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21244A4012021-08-10010 August 2021 (Final) Request for Information (RAI) Dresden, Units 1, 2, 3, and ISFSI Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50 Appendix E ML21215A3502021-08-0303 August 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-554 ML21190A0192021-07-0808 July 2021 NRR E-mail Capture - Exelon Fleet - Request for Additional Information Regarding Adoption of TSTF-582 and TSTF-583-T ML21154A0112021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21154A0142021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21154A0132021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21144A2132021-05-24024 May 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21139A1722021-05-19019 May 2021 Acceptance Review Memo Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Pressure Retaining Bolting Requirements ML21117A0442021-04-26026 April 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21105A0002021-04-12012 April 2021 Acceptance Review (LAR)-Dresden Nuclear Power Station, Units 1, 2, and 3, Proposed Changes to the Dresden Nuclear Power Station Emergency Plan and Emergency Action Level Scheme for the Permanently De-fueled Condition ML21103A0082021-04-12012 April 2021 Acceptance Review (Exemption Request): Dresden Nuclear Power Station, Units 1, 2, and 3-Request for Exemption from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E ML21084A2532021-03-24024 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Transfer Application ML21081A0722021-03-19019 March 2021 Acceptance Review for Dresden Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis-External Events (EPID L-2021-JLD-0000) (E-mail) ML21078A2182021-03-19019 March 2021 Acceptance Review for Dresden Order EA-13-109, Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions ML21063A3202021-03-0202 March 2021 RAIs for Dresden, Units 2 and 3, Proposed Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition (EPID L-2020-LLA-0239) (E-mail) ML21062A0652021-03-0101 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21049A2572021-02-18018 February 2021 Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237) ML21033A8552021-02-0202 February 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Alternative Request to Expand the Use ASME Codes Cases N-878 and N-880 2023-09-22
[Table view] |
Text
From: Haskell, Russell To: thomas.loomis@exeloncorp.com Cc: Steinman, Rebecca L:(Exelon Nuclear)
Subject:
(Dresden) Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting Date: Wednesday, May 19, 2021 8:26:48 AM Mr. Loomis:
By application dated December 1, 2020 (ADAMS Accession No. ML20336A008), Exelon Generation Company, LLC (the licensee) submitted a request in accordance with Paragraph 50.55a(z)(1) of Title 10 of the Code of Federal Regulations (10 CFR) for a proposed alternative to certain requirements of 10 CFR 50.55a, Codes and standards.
This was a fleet-based request which included the Dresden Nuclear Power Station, Units 2 and 3 (Dresden). The proposed alternative would allow the licensee to forgo preparation and completion of a repair and replacement plan and certain forms for pressure retaining bolting, that is not classified as Examination Categories B-G-1, B-G-2, or C-D, at this facility.
By supplemental letter dated April 20, 2021 (ADAMS Accession No. ML20336A008),
Exelon included responses to NRC staff questions regarding the initial application, as referenced above. As a result of the Exelon responses, the NRC staff identified issues that pertained to the Dresden proposed alternative on the aforementioned topic. The specific details of these issues were communicated to you via an NRC email message from the NRC Exelon Fleet Project Manager (B. Purnell) on April 26, 2021. In the message you were informed that the NRC staff has decided the supplemental letter included information for Dresden that is beyond the scope of the original application, which was accepted for review on December 14, 2020 (ADAMS Accession No. ML20350B558). You were informed the NRC staff will review the proposed alternative for Dresdens sixth 10-year ISI interval, separately, from the original application (which also included Dresdens 5th ISI interval).
The submittal date for this new task was determined to be April 20, 2021, which coincides with the supplemental information furnished by Exelon. This review will be performed by the NRC staff with the project code of EPID L-2021-LLR-0030. (The NRC staff will continue the Dresden review for the 5th ISI interval under the original application and EPID project code L-2020-LLR-0155). Additionally, on Tuesday May 18, 2021, the NRC staff held a public Observation Meeting with the Exelon staff to assess and clarify several remaining questions associated with these efforts. Shortly following this meeting, Exelon submitted a letter to the NRC dated May 18, 2021, Supplemental Information Concerning Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting (ADAMS Accession No. ML21138A839), which included clarifying information for the staff to consider for the Dresden 6th ISI interval review.
After a preliminary review of Exelons furnished information, the NRC staff has concluded that the request provides a sufficient level of technical information for the staff to commence with a detailed technical review and to make an independent assessment regarding the acceptability of the proposed request in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review process, as compared to a detailed technical review, there may be instances in which issues that impact the NRC staffs ability to complete its review are identified, despite completion of an adequate acceptance review. If additional information is needed, Exelon will be advised by separate correspondence.
Based on the information provided in the request, the NRC staff has estimated that this review will take approximately 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br /> to complete by Exelons request date of January 22, 2022. These estimates are based on the NRC staffs initial review of the application and they could change due to several factors, including requests for additional information or an unanticipated addition of project scope identified during the review. Should the NRC staff identify any emergent complexities or challenges that would cause significant changes to these estimates, they will be promptly communicated during routine exchanges between the NRC Project Manager/Exelon staff.
Russell S. Haskell II United States Nuclear Regulatory Commission (NRC)
Licensing Project Manager - NRR/DORL/LPL 3 Dresden Nuclear Power Station, Units 2 and 3
+ Russell.Haskell@nrc.gov; ( (301) 415-1129 (forwarded); Office: O-8C01; Mail-Stop O-8B1A